1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2017-2018, The Linux foundation. All rights reserved.
5 #include <linux/interrupt.h>
7 #include <linux/log2.h>
8 #include <linux/module.h>
9 #include <linux/platform_device.h>
10 #include <linux/pm_runtime.h>
11 #include <linux/qcom-geni-se.h>
12 #include <linux/spi/spi.h>
13 #include <linux/spinlock.h>
15 /* SPI SE specific registers and respective register fields */
16 #define SE_SPI_CPHA 0x224
19 #define SE_SPI_LOOPBACK 0x22c
20 #define LOOPBACK_ENABLE 0x1
21 #define NORMAL_MODE 0x0
22 #define LOOPBACK_MSK GENMASK(1, 0)
24 #define SE_SPI_CPOL 0x230
27 #define SE_SPI_DEMUX_OUTPUT_INV 0x24c
28 #define CS_DEMUX_OUTPUT_INV_MSK GENMASK(3, 0)
30 #define SE_SPI_DEMUX_SEL 0x250
31 #define CS_DEMUX_OUTPUT_SEL GENMASK(3, 0)
33 #define SE_SPI_TRANS_CFG 0x25c
34 #define CS_TOGGLE BIT(0)
36 #define SE_SPI_WORD_LEN 0x268
37 #define WORD_LEN_MSK GENMASK(9, 0)
38 #define MIN_WORD_LEN 4
40 #define SE_SPI_TX_TRANS_LEN 0x26c
41 #define SE_SPI_RX_TRANS_LEN 0x270
42 #define TRANS_LEN_MSK GENMASK(23, 0)
44 #define SE_SPI_PRE_POST_CMD_DLY 0x274
46 #define SE_SPI_DELAY_COUNTERS 0x278
47 #define SPI_INTER_WORDS_DELAY_MSK GENMASK(9, 0)
48 #define SPI_CS_CLK_DELAY_MSK GENMASK(19, 10)
49 #define SPI_CS_CLK_DELAY_SHFT 10
51 /* M_CMD OP codes for SPI */
55 #define SPI_CS_ASSERT 8
56 #define SPI_CS_DEASSERT 9
57 #define SPI_SCK_ONLY 10
58 /* M_CMD params for SPI */
59 #define SPI_PRE_CMD_DELAY BIT(0)
60 #define TIMESTAMP_BEFORE BIT(1)
61 #define FRAGMENTATION BIT(2)
62 #define TIMESTAMP_AFTER BIT(3)
63 #define POST_CMD_DELAY BIT(4)
65 struct spi_geni_master {
71 unsigned long cur_speed_hz;
72 unsigned int cur_bits_per_word;
73 unsigned int tx_rem_bytes;
74 unsigned int rx_rem_bytes;
75 const struct spi_transfer *cur_xfer;
76 struct completion cs_done;
77 struct completion cancel_done;
78 struct completion abort_done;
79 unsigned int oversampling;
85 static int get_spi_clk_cfg(unsigned int speed_hz,
86 struct spi_geni_master *mas,
87 unsigned int *clk_idx,
88 unsigned int *clk_div)
90 unsigned long sclk_freq;
91 unsigned int actual_hz;
92 struct geni_se *se = &mas->se;
95 ret = geni_se_clk_freq_match(&mas->se,
96 speed_hz * mas->oversampling,
97 clk_idx, &sclk_freq, false);
99 dev_err(mas->dev, "Failed(%d) to find src clk for %dHz\n",
104 *clk_div = DIV_ROUND_UP(sclk_freq, mas->oversampling * speed_hz);
105 actual_hz = sclk_freq / (mas->oversampling * *clk_div);
107 dev_dbg(mas->dev, "req %u=>%u sclk %lu, idx %d, div %d\n", speed_hz,
108 actual_hz, sclk_freq, *clk_idx, *clk_div);
109 ret = clk_set_rate(se->clk, sclk_freq);
111 dev_err(mas->dev, "clk_set_rate failed %d\n", ret);
115 static void handle_fifo_timeout(struct spi_master *spi,
116 struct spi_message *msg)
118 struct spi_geni_master *mas = spi_master_get_devdata(spi);
119 unsigned long time_left;
120 struct geni_se *se = &mas->se;
122 spin_lock_irq(&mas->lock);
123 reinit_completion(&mas->cancel_done);
124 writel(0, se->base + SE_GENI_TX_WATERMARK_REG);
125 mas->cur_xfer = NULL;
126 geni_se_cancel_m_cmd(se);
127 spin_unlock_irq(&mas->lock);
129 time_left = wait_for_completion_timeout(&mas->cancel_done, HZ);
133 spin_lock_irq(&mas->lock);
134 reinit_completion(&mas->abort_done);
135 geni_se_abort_m_cmd(se);
136 spin_unlock_irq(&mas->lock);
138 time_left = wait_for_completion_timeout(&mas->abort_done, HZ);
140 dev_err(mas->dev, "Failed to cancel/abort m_cmd\n");
143 static void spi_geni_set_cs(struct spi_device *slv, bool set_flag)
145 struct spi_geni_master *mas = spi_master_get_devdata(slv->master);
146 struct spi_master *spi = dev_get_drvdata(mas->dev);
147 struct geni_se *se = &mas->se;
148 unsigned long time_left;
150 if (!(slv->mode & SPI_CS_HIGH))
151 set_flag = !set_flag;
153 if (set_flag == mas->cs_flag)
156 mas->cs_flag = set_flag;
158 pm_runtime_get_sync(mas->dev);
159 spin_lock_irq(&mas->lock);
160 reinit_completion(&mas->cs_done);
162 geni_se_setup_m_cmd(se, SPI_CS_ASSERT, 0);
164 geni_se_setup_m_cmd(se, SPI_CS_DEASSERT, 0);
165 spin_unlock_irq(&mas->lock);
167 time_left = wait_for_completion_timeout(&mas->cs_done, HZ);
169 handle_fifo_timeout(spi, NULL);
171 pm_runtime_put(mas->dev);
174 static void spi_setup_word_len(struct spi_geni_master *mas, u16 mode,
175 unsigned int bits_per_word)
177 unsigned int pack_words;
178 bool msb_first = (mode & SPI_LSB_FIRST) ? false : true;
179 struct geni_se *se = &mas->se;
182 word_len = readl(se->base + SE_SPI_WORD_LEN);
185 * If bits_per_word isn't a byte aligned value, set the packing to be
186 * 1 SPI word per FIFO word.
188 if (!(mas->fifo_width_bits % bits_per_word))
189 pack_words = mas->fifo_width_bits / bits_per_word;
192 word_len &= ~WORD_LEN_MSK;
193 word_len |= ((bits_per_word - MIN_WORD_LEN) & WORD_LEN_MSK);
194 geni_se_config_packing(&mas->se, bits_per_word, pack_words, msb_first,
196 writel(word_len, se->base + SE_SPI_WORD_LEN);
199 static int setup_fifo_params(struct spi_device *spi_slv,
200 struct spi_master *spi)
202 struct spi_geni_master *mas = spi_master_get_devdata(spi);
203 struct geni_se *se = &mas->se;
204 u32 loopback_cfg, cpol, cpha, demux_output_inv;
205 u32 demux_sel, clk_sel, m_clk_cfg, idx, div;
208 loopback_cfg = readl(se->base + SE_SPI_LOOPBACK);
209 cpol = readl(se->base + SE_SPI_CPOL);
210 cpha = readl(se->base + SE_SPI_CPHA);
211 demux_output_inv = 0;
212 loopback_cfg &= ~LOOPBACK_MSK;
216 if (spi_slv->mode & SPI_LOOP)
217 loopback_cfg |= LOOPBACK_ENABLE;
219 if (spi_slv->mode & SPI_CPOL)
222 if (spi_slv->mode & SPI_CPHA)
225 if (spi_slv->mode & SPI_CS_HIGH)
226 demux_output_inv = BIT(spi_slv->chip_select);
228 demux_sel = spi_slv->chip_select;
229 mas->cur_speed_hz = spi_slv->max_speed_hz;
230 mas->cur_bits_per_word = spi_slv->bits_per_word;
232 ret = get_spi_clk_cfg(mas->cur_speed_hz, mas, &idx, &div);
234 dev_err(mas->dev, "Err setting clks ret(%d) for %ld\n",
235 ret, mas->cur_speed_hz);
239 clk_sel = idx & CLK_SEL_MSK;
240 m_clk_cfg = (div << CLK_DIV_SHFT) | SER_CLK_EN;
241 spi_setup_word_len(mas, spi_slv->mode, spi_slv->bits_per_word);
242 writel(loopback_cfg, se->base + SE_SPI_LOOPBACK);
243 writel(demux_sel, se->base + SE_SPI_DEMUX_SEL);
244 writel(cpha, se->base + SE_SPI_CPHA);
245 writel(cpol, se->base + SE_SPI_CPOL);
246 writel(demux_output_inv, se->base + SE_SPI_DEMUX_OUTPUT_INV);
247 writel(clk_sel, se->base + SE_GENI_CLK_SEL);
248 writel(m_clk_cfg, se->base + GENI_SER_M_CLK_CFG);
252 static int spi_geni_prepare_message(struct spi_master *spi,
253 struct spi_message *spi_msg)
256 struct spi_geni_master *mas = spi_master_get_devdata(spi);
257 struct geni_se *se = &mas->se;
259 geni_se_select_mode(se, GENI_SE_FIFO);
260 ret = setup_fifo_params(spi_msg->spi, spi);
262 dev_err(mas->dev, "Couldn't select mode %d\n", ret);
266 static int spi_geni_init(struct spi_geni_master *mas)
268 struct geni_se *se = &mas->se;
269 unsigned int proto, major, minor, ver;
271 pm_runtime_get_sync(mas->dev);
273 proto = geni_se_read_proto(se);
274 if (proto != GENI_SE_SPI) {
275 dev_err(mas->dev, "Invalid proto %d\n", proto);
276 pm_runtime_put(mas->dev);
279 mas->tx_fifo_depth = geni_se_get_tx_fifo_depth(se);
281 /* Width of Tx and Rx FIFO is same */
282 mas->fifo_width_bits = geni_se_get_tx_fifo_width(se);
285 * Hardware programming guide suggests to configure
286 * RX FIFO RFR level to fifo_depth-2.
288 geni_se_init(se, mas->tx_fifo_depth / 2, mas->tx_fifo_depth - 2);
289 /* Transmit an entire FIFO worth of data per IRQ */
291 ver = geni_se_get_qup_hw_version(se);
292 major = GENI_SE_VERSION_MAJOR(ver);
293 minor = GENI_SE_VERSION_MINOR(ver);
295 if (major == 1 && minor == 0)
296 mas->oversampling = 2;
298 mas->oversampling = 1;
300 pm_runtime_put(mas->dev);
304 static void setup_fifo_xfer(struct spi_transfer *xfer,
305 struct spi_geni_master *mas,
306 u16 mode, struct spi_master *spi)
310 struct geni_se *se = &mas->se;
313 * Ensure that our interrupt handler isn't still running from some
314 * prior command before we start messing with the hardware behind
315 * its back. We don't need to _keep_ the lock here since we're only
316 * worried about racing with out interrupt handler. The SPI core
317 * already handles making sure that we're not trying to do two
318 * transfers at once or setting a chip select and doing a transfer
321 * NOTE: we actually _can't_ hold the lock here because possibly we
322 * might call clk_set_rate() which needs to be able to sleep.
324 spin_lock_irq(&mas->lock);
325 spin_unlock_irq(&mas->lock);
327 spi_tx_cfg = readl(se->base + SE_SPI_TRANS_CFG);
328 if (xfer->bits_per_word != mas->cur_bits_per_word) {
329 spi_setup_word_len(mas, mode, xfer->bits_per_word);
330 mas->cur_bits_per_word = xfer->bits_per_word;
333 /* Speed and bits per word can be overridden per transfer */
334 if (xfer->speed_hz != mas->cur_speed_hz) {
336 u32 clk_sel, m_clk_cfg;
337 unsigned int idx, div;
339 ret = get_spi_clk_cfg(xfer->speed_hz, mas, &idx, &div);
341 dev_err(mas->dev, "Err setting clks:%d\n", ret);
345 * SPI core clock gets configured with the requested frequency
346 * or the frequency closer to the requested frequency.
347 * For that reason requested frequency is stored in the
348 * cur_speed_hz and referred in the consecutive transfer instead
349 * of calling clk_get_rate() API.
351 mas->cur_speed_hz = xfer->speed_hz;
352 clk_sel = idx & CLK_SEL_MSK;
353 m_clk_cfg = (div << CLK_DIV_SHFT) | SER_CLK_EN;
354 writel(clk_sel, se->base + SE_GENI_CLK_SEL);
355 writel(m_clk_cfg, se->base + GENI_SER_M_CLK_CFG);
358 mas->tx_rem_bytes = 0;
359 mas->rx_rem_bytes = 0;
361 spi_tx_cfg &= ~CS_TOGGLE;
363 if (!(mas->cur_bits_per_word % MIN_WORD_LEN))
364 len = xfer->len * BITS_PER_BYTE / mas->cur_bits_per_word;
366 len = xfer->len / (mas->cur_bits_per_word / BITS_PER_BYTE + 1);
367 len &= TRANS_LEN_MSK;
369 mas->cur_xfer = xfer;
371 m_cmd |= SPI_TX_ONLY;
372 mas->tx_rem_bytes = xfer->len;
373 writel(len, se->base + SE_SPI_TX_TRANS_LEN);
377 m_cmd |= SPI_RX_ONLY;
378 writel(len, se->base + SE_SPI_RX_TRANS_LEN);
379 mas->rx_rem_bytes = xfer->len;
381 writel(spi_tx_cfg, se->base + SE_SPI_TRANS_CFG);
384 * Lock around right before we start the transfer since our
385 * interrupt could come in at any time now.
387 spin_lock_irq(&mas->lock);
388 geni_se_setup_m_cmd(se, m_cmd, FRAGMENTATION);
391 * TX_WATERMARK_REG should be set after SPI configuration and
392 * setting up GENI SE engine, as driver starts data transfer
393 * for the watermark interrupt.
395 if (m_cmd & SPI_TX_ONLY)
396 writel(mas->tx_wm, se->base + SE_GENI_TX_WATERMARK_REG);
397 spin_unlock_irq(&mas->lock);
400 static int spi_geni_transfer_one(struct spi_master *spi,
401 struct spi_device *slv,
402 struct spi_transfer *xfer)
404 struct spi_geni_master *mas = spi_master_get_devdata(spi);
406 /* Terminate and return success for 0 byte length transfer */
410 setup_fifo_xfer(xfer, mas, slv->mode, spi);
414 static unsigned int geni_byte_per_fifo_word(struct spi_geni_master *mas)
417 * Calculate how many bytes we'll put in each FIFO word. If the
418 * transfer words don't pack cleanly into a FIFO word we'll just put
419 * one transfer word in each FIFO word. If they do pack we'll pack 'em.
421 if (mas->fifo_width_bits % mas->cur_bits_per_word)
422 return roundup_pow_of_two(DIV_ROUND_UP(mas->cur_bits_per_word,
425 return mas->fifo_width_bits / BITS_PER_BYTE;
428 static void geni_spi_handle_tx(struct spi_geni_master *mas)
430 struct geni_se *se = &mas->se;
431 unsigned int max_bytes;
433 unsigned int bytes_per_fifo_word = geni_byte_per_fifo_word(mas);
436 max_bytes = (mas->tx_fifo_depth - mas->tx_wm) * bytes_per_fifo_word;
437 if (mas->tx_rem_bytes < max_bytes)
438 max_bytes = mas->tx_rem_bytes;
440 tx_buf = mas->cur_xfer->tx_buf + mas->cur_xfer->len - mas->tx_rem_bytes;
441 while (i < max_bytes) {
443 unsigned int bytes_to_write;
445 u8 *fifo_byte = (u8 *)&fifo_word;
447 bytes_to_write = min(bytes_per_fifo_word, max_bytes - i);
448 for (j = 0; j < bytes_to_write; j++)
449 fifo_byte[j] = tx_buf[i++];
450 iowrite32_rep(se->base + SE_GENI_TX_FIFOn, &fifo_word, 1);
452 mas->tx_rem_bytes -= max_bytes;
453 if (!mas->tx_rem_bytes)
454 writel(0, se->base + SE_GENI_TX_WATERMARK_REG);
457 static void geni_spi_handle_rx(struct spi_geni_master *mas)
459 struct geni_se *se = &mas->se;
461 unsigned int rx_bytes;
462 unsigned int rx_last_byte_valid;
464 unsigned int bytes_per_fifo_word = geni_byte_per_fifo_word(mas);
467 rx_fifo_status = readl(se->base + SE_GENI_RX_FIFO_STATUS);
468 rx_bytes = (rx_fifo_status & RX_FIFO_WC_MSK) * bytes_per_fifo_word;
469 if (rx_fifo_status & RX_LAST) {
470 rx_last_byte_valid = rx_fifo_status & RX_LAST_BYTE_VALID_MSK;
471 rx_last_byte_valid >>= RX_LAST_BYTE_VALID_SHFT;
472 if (rx_last_byte_valid && rx_last_byte_valid < 4)
473 rx_bytes -= bytes_per_fifo_word - rx_last_byte_valid;
475 if (mas->rx_rem_bytes < rx_bytes)
476 rx_bytes = mas->rx_rem_bytes;
478 rx_buf = mas->cur_xfer->rx_buf + mas->cur_xfer->len - mas->rx_rem_bytes;
479 while (i < rx_bytes) {
481 u8 *fifo_byte = (u8 *)&fifo_word;
482 unsigned int bytes_to_read;
485 bytes_to_read = min(bytes_per_fifo_word, rx_bytes - i);
486 ioread32_rep(se->base + SE_GENI_RX_FIFOn, &fifo_word, 1);
487 for (j = 0; j < bytes_to_read; j++)
488 rx_buf[i++] = fifo_byte[j];
490 mas->rx_rem_bytes -= rx_bytes;
493 static irqreturn_t geni_spi_isr(int irq, void *data)
495 struct spi_master *spi = data;
496 struct spi_geni_master *mas = spi_master_get_devdata(spi);
497 struct geni_se *se = &mas->se;
500 m_irq = readl(se->base + SE_GENI_M_IRQ_STATUS);
504 if (m_irq & (M_CMD_OVERRUN_EN | M_ILLEGAL_CMD_EN | M_CMD_FAILURE_EN |
505 M_RX_FIFO_RD_ERR_EN | M_RX_FIFO_WR_ERR_EN |
506 M_TX_FIFO_RD_ERR_EN | M_TX_FIFO_WR_ERR_EN))
507 dev_warn(mas->dev, "Unexpected IRQ err status %#010x\n", m_irq);
509 spin_lock(&mas->lock);
511 if ((m_irq & M_RX_FIFO_WATERMARK_EN) || (m_irq & M_RX_FIFO_LAST_EN))
512 geni_spi_handle_rx(mas);
514 if (m_irq & M_TX_FIFO_WATERMARK_EN)
515 geni_spi_handle_tx(mas);
517 if (m_irq & M_CMD_DONE_EN) {
519 spi_finalize_current_transfer(spi);
520 mas->cur_xfer = NULL;
522 * If this happens, then a CMD_DONE came before all the
523 * Tx buffer bytes were sent out. This is unusual, log
524 * this condition and disable the WM interrupt to
525 * prevent the system from stalling due an interrupt
528 * If this happens when all Rx bytes haven't been
529 * received, log the condition. The only known time
530 * this can happen is if bits_per_word != 8 and some
531 * registers that expect xfer lengths in num spi_words
532 * weren't written correctly.
534 if (mas->tx_rem_bytes) {
535 writel(0, se->base + SE_GENI_TX_WATERMARK_REG);
536 dev_err(mas->dev, "Premature done. tx_rem = %d bpw%d\n",
537 mas->tx_rem_bytes, mas->cur_bits_per_word);
539 if (mas->rx_rem_bytes)
540 dev_err(mas->dev, "Premature done. rx_rem = %d bpw%d\n",
541 mas->rx_rem_bytes, mas->cur_bits_per_word);
543 complete(&mas->cs_done);
547 if (m_irq & M_CMD_CANCEL_EN)
548 complete(&mas->cancel_done);
549 if (m_irq & M_CMD_ABORT_EN)
550 complete(&mas->abort_done);
553 * It's safe or a good idea to Ack all of our our interrupts at the
554 * end of the function. Specifically:
555 * - M_CMD_DONE_EN / M_RX_FIFO_LAST_EN: Edge triggered interrupts and
556 * clearing Acks. Clearing at the end relies on nobody else having
557 * started a new transfer yet or else we could be clearing _their_
558 * done bit, but everyone grabs the spinlock before starting a new
560 * - M_RX_FIFO_WATERMARK_EN / M_TX_FIFO_WATERMARK_EN: These appear
561 * to be "latched level" interrupts so it's important to clear them
562 * _after_ you've handled the condition and always safe to do so
563 * since they'll re-assert if they're still happening.
565 writel(m_irq, se->base + SE_GENI_M_IRQ_CLEAR);
567 spin_unlock(&mas->lock);
572 static int spi_geni_probe(struct platform_device *pdev)
575 struct spi_master *spi;
576 struct spi_geni_master *mas;
579 struct device *dev = &pdev->dev;
581 irq = platform_get_irq(pdev, 0);
585 base = devm_platform_ioremap_resource(pdev, 0);
587 return PTR_ERR(base);
589 clk = devm_clk_get(dev, "se");
593 spi = spi_alloc_master(dev, sizeof(*mas));
597 platform_set_drvdata(pdev, spi);
598 mas = spi_master_get_devdata(spi);
602 mas->se.wrapper = dev_get_drvdata(dev->parent);
607 spi->dev.of_node = dev->of_node;
608 spi->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LOOP | SPI_CS_HIGH;
609 spi->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32);
610 spi->num_chipselect = 4;
611 spi->max_speed_hz = 50000000;
612 spi->prepare_message = spi_geni_prepare_message;
613 spi->transfer_one = spi_geni_transfer_one;
614 spi->auto_runtime_pm = true;
615 spi->handle_err = handle_fifo_timeout;
616 spi->set_cs = spi_geni_set_cs;
618 init_completion(&mas->cs_done);
619 init_completion(&mas->cancel_done);
620 init_completion(&mas->abort_done);
621 spin_lock_init(&mas->lock);
622 pm_runtime_use_autosuspend(&pdev->dev);
623 pm_runtime_set_autosuspend_delay(&pdev->dev, 250);
624 pm_runtime_enable(dev);
626 ret = spi_geni_init(mas);
628 goto spi_geni_probe_runtime_disable;
630 ret = request_irq(mas->irq, geni_spi_isr, 0, dev_name(dev), spi);
632 goto spi_geni_probe_runtime_disable;
634 ret = spi_register_master(spi);
636 goto spi_geni_probe_free_irq;
639 spi_geni_probe_free_irq:
640 free_irq(mas->irq, spi);
641 spi_geni_probe_runtime_disable:
642 pm_runtime_disable(dev);
647 static int spi_geni_remove(struct platform_device *pdev)
649 struct spi_master *spi = platform_get_drvdata(pdev);
650 struct spi_geni_master *mas = spi_master_get_devdata(spi);
652 /* Unregister _before_ disabling pm_runtime() so we stop transfers */
653 spi_unregister_master(spi);
655 free_irq(mas->irq, spi);
656 pm_runtime_disable(&pdev->dev);
660 static int __maybe_unused spi_geni_runtime_suspend(struct device *dev)
662 struct spi_master *spi = dev_get_drvdata(dev);
663 struct spi_geni_master *mas = spi_master_get_devdata(spi);
665 return geni_se_resources_off(&mas->se);
668 static int __maybe_unused spi_geni_runtime_resume(struct device *dev)
670 struct spi_master *spi = dev_get_drvdata(dev);
671 struct spi_geni_master *mas = spi_master_get_devdata(spi);
673 return geni_se_resources_on(&mas->se);
676 static int __maybe_unused spi_geni_suspend(struct device *dev)
678 struct spi_master *spi = dev_get_drvdata(dev);
681 ret = spi_master_suspend(spi);
685 ret = pm_runtime_force_suspend(dev);
687 spi_master_resume(spi);
692 static int __maybe_unused spi_geni_resume(struct device *dev)
694 struct spi_master *spi = dev_get_drvdata(dev);
697 ret = pm_runtime_force_resume(dev);
701 ret = spi_master_resume(spi);
703 pm_runtime_force_suspend(dev);
708 static const struct dev_pm_ops spi_geni_pm_ops = {
709 SET_RUNTIME_PM_OPS(spi_geni_runtime_suspend,
710 spi_geni_runtime_resume, NULL)
711 SET_SYSTEM_SLEEP_PM_OPS(spi_geni_suspend, spi_geni_resume)
714 static const struct of_device_id spi_geni_dt_match[] = {
715 { .compatible = "qcom,geni-spi" },
718 MODULE_DEVICE_TABLE(of, spi_geni_dt_match);
720 static struct platform_driver spi_geni_driver = {
721 .probe = spi_geni_probe,
722 .remove = spi_geni_remove,
725 .pm = &spi_geni_pm_ops,
726 .of_match_table = spi_geni_dt_match,
729 module_platform_driver(spi_geni_driver);
731 MODULE_DESCRIPTION("SPI driver for GENI based QUP cores");
732 MODULE_LICENSE("GPL v2");